ONLINE TEST FOR CLASS 9 MATHS SURFACE AREAS VOLUMES

ONLINE TEST FOR CLASS 9 MATHS SURFACE AREAS VOLUMES

  • Question 1:  

    The perimeter of the one face of a cube is 20 cm. Then its volume must be

  • 125 cm3

  • 400 cm3

  • 1000 cm3

  • 8000 cm3

  • Question 2:  

    A hemisphere bowl has a radius of 3.5 cm. The volume of the water it would contain is

  • 88.9 cm3

  • 89.8 cm3

  • 88 cm3

  • 90 cm3

  • Question 3:  

    If each edge of a cube is increased by 50% then the percentage increase in its surface area is

  • 50%

  • 100%

  • 125%

  • 150%

  • Question 4:  

    The surface area of two spheres are in the ratio 1:4. then the ratio of their volume is

  • 1 : 2

  • 1 : 4

  • 1 : 8

  • 1 : 16

  • Question 5:  

    The maximum length of the longest rod that can be placed in a rectangular box of dimensions 8 cm * 6 cm *  2 cm is

  • 2√13 cm

  • 2√14 cm

  • 2√26 cm

  • 10√2 cm

  • Question 6:  

    The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction of the volume of the earth is the volume of the moon?

  • 1/4

  • 1/16

  • 1/64

  • 1/36

  • Question 7:  

    A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then the volume of the iron used to make the tank is

  • 0.06343 m3

  • 1.06343 m3

  • 0.06686 m3

  • none of these

  • Question 8:  

    The edge of the cuboid are in the ratio 1 : 2 : 3 and its surface area is 88 cm2 . Then the volume of the cuboid is

  • 24 cm3

  • 48 cm3

  • 64 cm3

  • 120 cm3

  • Question 9:  

    A cone, a hemisphere and a cylinder stand on equal bases and have the same height. The ratio of their volume is

  • 1:2:3

  • 1:3:5

  • 2:4:5

  • 1:2:4

  • Question 10:  

    The diagonal of a cube is 6√3 cm. Then its volume is

  • 216 cm3

  • 64 cm3

  • 144 cm3

  • 136 cm3

  • A cylindrical rod whose height is 8 times of its radius is melted and recast into spherical balls of same radius. The number of balls will be

    6

    4

    3

    8

The edge of a cube is 20 cm. How many small cubes of 5 cm edge can be formed from this cube?

32

100

4

64

A metallic right circular cone of height 9 cm and base radius 7 cm is melted into a cuboid whose two sides are 11 cm and 6 cm. What is the third side of the cuboid?

5 cm

7 cm

6 cm

10 cm

A metallic right circular cone of height 9 cm and base radius 7 cm is melted into a cuboid whose two sides are 11 cm and 6 cm. What is the third side of the cuboid?

5 cm

7 cm

6 cm

10 cm

  • Balkishan

    I bring to you the BEST for students of Class 9th - 12th. I (Balkishan Agrawal) aim at providing complete preparation for CBSE Board Exams (Maths) along with several other competitive examinations like NTSE, NSO, NSEJS, PRMO, etc. & Maths Reasoning, Vedic Maths at the school level. Wishing you great learning in all aspects of your life!

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